rebuild: Rebuild an object from a template

In cheapr: Simple Functions to Save Time and Memory

Rebuild an object from a template

Description

Rebuild an object from a template

Usage

rebuild(x, template, ...)

## S3 method for class 'data.frame'
rebuild(x, template, shallow_copy = TRUE, ...)

## S3 method for class 'data.table'
rebuild(x, template, shallow_copy = TRUE, ...)

Arguments

x	An object in which carefully selected attributes will be copied into from template.
template	A template object used to copy attributes into x.
...	Further arguments passed onto methods.
shallow_copy	Should x be shallow copied before rebuilding? Default is TRUE.

Details

In R attributes are difficult to work with. One big reason for this is that attributes may or may not be independent of the data. Date vectors for example have attributes completely independent of the data and hence if the attributes are removed at any point, they can easily be re-added without any calculations. Factors have almost data-independent attributes with an exception being when factors are combined. In some cases it is not possible to rebuild attributes from the data alone.

You can add your own rebuild method for an object not covered by the methods here.

Value

An object similar to template.

cheapr documentation built on June 8, 2025, 11:35 a.m.